/*
 *  Copyright (c) 2001-2007, Jean Tessier
 *  All rights reserved.
 *  
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *  
 *      * Redistributions of source code must retain the above copyright
 *        notice, this list of conditions and the following disclaimer.
 *  
 *      * Redistributions in binary form must reproduce the above copyright
 *        notice, this list of conditions and the following disclaimer in the
 *        documentation and/or other materials provided with the distribution.
 *  
 *      * Neither the name of Jean Tessier nor the names of his contributors
 *        may be used to endorse or promote products derived from this software
 *        without specific prior written permission.
 *  
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *  A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR
 *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 *  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 *  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.jeantessier.classreader;

import java.io.*;
import java.util.jar.*;

import org.apache.log4j.*;

public class JarClassfileLoader extends ZipClassfileLoader {
    public JarClassfileLoader(ClassfileLoader loader) {
        super(loader);
    }

    protected void load(String filename) {
        Logger.getLogger(getClass()).debug("Reading " + filename);

        JarFile jarfile = null;
        try {
            jarfile = new JarFile(filename);

            fireBeginGroup(filename, jarfile.size());
            load(jarfile);
            fireEndGroup(filename);
        } catch (IOException ex) {
            Logger.getLogger(getClass()).error("Cannot load JAR file \"" + filename + "\"", ex);
        } finally {
            if (jarfile != null) {
                try {
                    jarfile.close();
                } catch (IOException ex) {
                    // Ignore
                }
            }
        }
    }

    protected void load(String filename, InputStream in) {
        Logger.getLogger(getClass()).debug("Reading " + filename);
        
        JarInputStream jarfile = null;
        try {
            jarfile = new JarInputStream(in);

            fireBeginGroup(filename, -1);
            load(jarfile);
            fireEndGroup(filename);
        } catch (IOException ex) {
            Logger.getLogger(getClass()).error("Cannot load JAR file \"" + filename + "\"", ex);
        } finally {
            if (jarfile != null) {
                try {
                    jarfile.close();
                } catch (IOException ex) {
                    // Ignore
                }
            }
        }
    }
}
